El Niño Is Back
El Niño is back, and this one could be a big one.
According to NOAA's Climate Prediction Center, El Niño is strengthening, with greater than a 90% chance of a very strong event during the Northern Hemisphere fall and winter of 2026 to 2027. NOAA's September outlook gives a 75% chance that the October through December 2026 period reaches historic El Niño strength, meaning it would exceed the strength of previous events dating back to 1950 under NOAA's Relative Oceanic Niño Index.
That does not mean everyone is about to experience extreme weather.
El Niño is not a storm, hurricane, or single weather event. It is a large-scale shift in tropical Pacific Ocean temperatures and atmospheric circulation that can influence storm tracks, precipitation, and temperatures across the United States.
For people interested in preparedness, that makes it worth paying attention to.
NOAA figures current as of September 2026.
What Is El Niño?
El Niño occurs when surface waters in the central and eastern tropical Pacific become warmer than normal.
That extra heat changes atmospheric circulation and can influence where storms develop and where the jet stream carries them.
The effects are not uniform. Some parts of the country can become wetter while others become drier. Some areas can see increased odds of warmer temperatures while other areas can experience different seasonal patterns.
Right now, NOAA expects the current El Niño to continue strengthening through the end of 2026.
What Could It Mean for the United States?
Regional patterns below reflect typical El Niño tendencies and NOAA's current seasonal outlook.
The Southern United States
A classic El Niño winter pattern tends to shift the jet stream and storm track farther south.
That can increase the odds of wetter conditions across portions of the southern United States, particularly during the winter months.
For people in areas vulnerable to flooding, heavy rainfall, or severe storms, that makes water and evacuation planning particularly important.
California and the Southwest
El Niño often increases the odds of above-normal precipitation across parts of California and the Southwest.
That can mean beneficial precipitation in some places, but heavy rainfall can also create flooding, mudslides, road closures, and other problems.
The important distinction is that more precipitation does not automatically mean less risk.
The Southeast and Gulf Coast
Parts of the Southeast can experience wetter conditions during El Niño winters.
That can increase concerns around flooding and severe weather depending on the specific location and storm pattern.
If you live in a flood-prone area, knowing your evacuation route and having important documents protected from water should be part of your preparedness plan.
The Pacific Northwest and Northern Rockies
El Niño has historically been associated with drier conditions across portions of the Pacific Northwest and Northern Rockies.
That does not mean every location will experience a dry winter, but it is one reason people in these areas should continue paying attention to wildfire, water, and drought conditions.
The Northern United States
NOAA's current seasonal outlook favors above-normal temperatures across large portions of the northern United States during much of the upcoming winter.
That does not eliminate winter weather risks. A warmer seasonal average can still include dangerous individual storms, freezing temperatures, ice, and major disruptions.
The Great Lakes
The current NOAA outlook has a notable warm signal across the Great Lakes and surrounding northern areas.
Local conditions can vary substantially, so residents should continue watching their local National Weather Service forecasts rather than assuming the seasonal outlook determines what any individual storm will bring.
So What Should You Actually Prepare For?
You do not need to build a bunker because El Niño is coming.
Instead, look at the hazards that are more relevant where you live and make sure you can handle a disruption.
1. Prepare for Power Outages
Storms are one of the most common causes of power disruptions.
Have at least one reliable source of lighting that does not depend on the electrical grid. Keep phones and other essential devices charged.
If you want to prepare for longer outages, consider a portable power station capable of keeping essential equipment running. You do not necessarily need enough power to run your entire house.
2. Keep Emergency Water on Hand
Heavy rainfall does not automatically mean safe drinking water.
Flooding can contaminate private wells, disrupt municipal systems, and make normal water sources temporarily unavailable.
Keep an emergency supply of drinking water available and know how you would obtain and purify additional water if necessary. A few days of stored water can buy you valuable time during a disruption.
3. Take Flooding Seriously
Do not assume that because your neighborhood has never flooded, it cannot flood.
If you live in an area vulnerable to heavy rainfall, identify your evacuation routes before you need them. Keep important documents somewhere protected from water.
Do not store your entire emergency kit somewhere that could become inaccessible during a flood. Know where you would go if you had to leave home.
4. Remember That Drier Conditions Can Be a Problem Too
El Niño does not make the entire country wetter. Some areas can experience below-normal precipitation.
That means wildfire conditions, drought, and water availability can remain concerns in portions of the West and Northwest.
5. Keep Your Pets in the Plan
Your emergency plan should include every member of your household, including the four-legged ones.
If you had to evacuate tonight, could you leave with your pet quickly? Do you have:
- ■Food
- ■Water
- ■Medications
- ■Identification
- ■Veterinary records
- ■First-aid supplies
- ■A carrier or secure transportation method
- ■A destination that accepts pets
Those details are easy to overlook until you are suddenly trying to evacuate.
Apocalypse Warehouse has a Pet Preparedness Assessment designed to help pet owners identify gaps in their emergency plan and figure out what they should address next.
Do Not Prepare for "El Niño"
This is the most important takeaway.
El Niño is not itself a disaster. It is a climate pattern that changes the probability of certain weather conditions.
The useful question is not: "How do I prepare for El Niño?"
- Check your local flood risk.
- Check your area's wildfire risk.
- Know your evacuation routes.
- Store emergency water.
- Have backup lighting.
- Have a way to charge essential electronics.
- Know how you will receive emergency information if the internet or cell network becomes unreliable.
- Keep enough food and medication to handle an extended disruption.
- Make sure your pets are included in the plan.
You do not need to predict exactly what winter will bring.
You need to make sure you are not completely dependent on everything going according to plan.
That's preparedness.
Keep Watching the Forecast
El Niño forecasts will continue to evolve throughout the fall and winter.
NOAA's Climate Prediction Center updates its ENSO analysis and seasonal outlooks regularly. Local National Weather Service offices are the best source for current warnings, watches, and location-specific forecasts.
The weather does not have to be predictable for you to be prepared for it.
APOCALYPSE WAREHOUSE
Know Your Risks. Close the Gaps.
Preparedness starts with understanding what could go wrong where you live. Explore Apocalypse Warehouse tools, guides, and field-tested gear designed to help you prepare for real-world disruptions.